Home / 31,100,866.76-42,940,446.90-20,114,208.20

Finding the Fourth Proportional to 31,100,866.76, 42,940,446.90 and 20,114,208.20

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Solution

The fourth proportional to 31,100,866.76, 42,940,446.90 and 20,114,208.20 is: 27,771,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,100,866.76 : 42,940,446.90 = 20,114,208.20 : x
  2. Step 2: Convert to fraction form
    31,100,866.76/42,940,446.90 = 20,114,208.20/x
  3. Step 3: Cross multiply
    31,100,866.76x = 42,940,446.90 × 20,114,208.20
  4. Step 4: Simplify right side
    31,100,866.76x = 863,713,089,147,644.50
  5. Step 5: Solve for x
    x = 863,713,089,147,644.50/31,100,866.76
  6. Step 6: Final answer
    x = 27,771,351.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.